最近下了本电子书，unix网络编程，我的安装的操作系统是CentOS 5.5 ,把源代码导入之后，按照着readme.txt那个说明编译运行了一遍，发现有些报错内容，忽略过去了，但是就是运行第一个程序的时候就报错，非常郁闷：
[root@localhost intro]# ./daytimetcpcli1 127.0.0.1
-bash: ./daytimetcpcli1: No such file or directory
[root@localhost intro]# ./daytimetcpcli 127.0.0.1
connect error: Connection refused
本来是想学C语言的网络编程的，但是第一个程序就跑不起来，对我的打击相当的大啊，在网上找了半天也没有详细的说明如何用里面的方法，都是很大牛的口气告诉新手，直接改代码吧。。。让我很是无奈。。。
我只知道用C写的源文件可以用gcc来编译，但是里面的源代码我用GCC这个命令来编译，就报一大堆的错，相当的郁闷。。。
[root@localhost intro]# ./daytimetcpcli1.c 127.0.0.1
./daytimetcpcli1.c: line 3: int: command not found
./daytimetcpcli1.c: line 4: syntax error near unexpected token `int'
./daytimetcpcli1.c: line 4: `main(int argc, char **argv)'
[root@localhost intro]# gcc daytimetcpcli1.c
daytimetcpcli1.c:1:17: error: unp.h: No such file or directory
daytimetcpcli1.c: In function amaina:
daytimetcpcli1.c:7: error: aMAXLINEa undeclared (first use in this function)
daytimetcpcli1.c:7: error: (Each undeclared identifier is reported only once
daytimetcpcli1.c:7: error: for each function it appears in.)
daytimetcpcli1.c:8: error: storage size of aservaddra isnat known
daytimetcpcli1.c:13: error: aAF_INETa undeclared (first use in this function)
daytimetcpcli1.c:13: error: aSOCK_STREAMa undeclared (first use in this function)
daytimetcpcli1.c:16: warning: incompatible implicit declaration of built-in function abzeroa
daytimetcpcli1.c:22: error: aSAa undeclared (first use in this function)
daytimetcpcli1.c:22: error: expected expression before a)a token
daytimetcpcli1.c:28: error: astdouta undeclared (first use in this function)
daytimetcpcli1.c:28: error: aEOFa undeclared (first use in this function)
daytimetcpcli1.c:34: warning: incompatible implicit declaration of built-in function aprintfa
daytimetcpcli1.c:35: warning: incompatible implicit declaration of built-in function aexita
我准备下个FreeBSD来试试，莫非是操作系统的版本不对的问题吗。。。
总之，这次尝试是让我相当的不开心啊
本文转自你是路人甲还是霍元甲博客51CTO博客，原文链接http://blog.51cto.com/world77/454564如需转载请自行联系原作者
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